@Treeaddict Survival ranges from well over 90% to a little under 70%, usually. I have seen it be as high as 99%, and as low as 55%. Replants/interplants happen if the numbers of surviving healthy crop trees per acre are too low, like less than 250/acre or so here where I live. For comparison, full plantability (never happens, that would be 8'x8' spacing with no unplantable spots) is 680 tpa. Anything over 525tpa is considered very good numbers. 475 is likely a reasonable average over many years and thousands of acres planted.
The question of whether fire helps or hurts soil productivity is a complex one, often debated. Lots of variables impact the answer. How hot the burn, how much or little organic component is left after. Aspect affects ground temps if no shade exists after a burn, steepness affects erosion, etc. It can be hard to quantify.